Polaris Probably the most technically innovative program in history, Polaris integrated solid-propellant, inertially-guided intermediate range ballistic missiles with nuclear submarines that could remain submerged for months at a time. All of these were new technologies, but the first ship was underway only three years after go-ahead. More...

Polaris A2 American missile. In comparison to the A-1, the Polaris A-2 had a slightly longer first stage and a lighter second-stage motor casing. These features increased range to 2800 km (1500 nm), the performance originally envisioned by the Navy. More...